Iridium-catalysed carbonylation process for the production...

Details Iridium-catalysed carbonylation process for the production... Iridium-catalysed carbonylation process for the production...

C - Chemistry, Metallurgy

07

C

C07C 53/08 (2006.01) C07C 51/12 (2006.01)

Patent

CA 2225142

A process for the production of acetic acid comprising carbonylating with carbon monoxide methanol and/or a reactive derivative thereof in the substantial absence of a metal promoter and/or ionic iodide co-promoter in a carbonylation reactor containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide co-catalyst, water, acetic acid and methyl acetate wherein there is maintained (i) in the liquid reaction composition:- (a) water at a concentration of less than 5.0% by weight and (b) methyl iodide at a concentration greater than 12% by weight and (ii) in the carbonylation reactor a total pressure of less than 50 barg.

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